Dumping section for grates



Patented May 2, 1933 UNITED STATES PATENT OFFICE.

ARTHUR W. HULSON, 0F KEOKUK, IOWA.

DUMPING SECTION FOR GRATES Application filed November 2-,. 1931 Serial No. 572,651.

formed, when the fire is to be dumped. These; dumping sections have been heretofore of 0 one-piece construction and have thus been subject to severe warping and tobreakage under the influence of expansion and moreover have necessitated substitution of a complete new section even if only a portion of the old section hasbecome burnt out or otherwise damaged. Such complete substitution has been objectionable not only on account of the expense involved, but the difficulty of making the substitution, due largely to the weight of the dumping sections.

My invention aims to provide a new and improved dumping section of sectional form in which ample provision is" made for expansion and contraction without injury, and this sectional construction also allows easy replacement of any injured part or parts and permits further use of anyother part or parts still in condition for further service.

With the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, description being accomplished by reference to the accompanying drawing.

Fig. 1 is a top plan view of a dumping section constructed in accordance with the invention.

Fig. 2 is a rear edge view.

Fig. 3 is an end elevation. 1

Fig. 4 is a vertical sectional view on line removable section S, and the fire-supportin means M is carried by and interlocked wit 1 saidmarginal frame, so that no portion of said fire-supporting means can be removed from the frame until the frame section S is detached. -Upon such detachment however, any or all portions of the fire-supporting means, may be removed and another portion or portions readily substituted.

The frame F is preferably of the specific construction disclosed, being formed only of two pieces and the necessary bolts for connecting them. One piece of this frame embodies a horizontal bar 6 adapted to extend transversely at the front end of a fire-box, said bar preferably having ash-discharge and air-admission openings 7. Rigidly connected with the ends of the bar 6 and preferably formed integrally therewith, are two lateral arms 8 which extend toward the rear endv of the fire-box, said arms being preferably provided with ash-discharge and air-admission slots 9. The rear lower corners of the arms 8 are notched as at 10 for a purpose to appear, and the front ends of these arms are provided with integral lugs 11 which are also integral with the bar 6, one of said lugs being provided with a continuous-walled bearing socket 12 while the other is provided. with a bearing socket 12 which opens not only through the outer side of the lug, but

through the lower end of the latter. Both of the bearing sockets 12 and 12 are adapted for engagement with the conventional bearing trunnions (not shown) to pivotally support the entire dump section.

Also integral with the bar 6 and disposed between the arms 8, is an intermediate arm 13 (or a plurality of them). The rear end of the arm 13 is provided with a downwardly projecting lug 14 for engagement with the conventional dumping means so that the entire grate section may be swung downwardly when the fire is to be dumped, and later re stored to its horizontal position. The arms 8 and 13 are all detachably secured by bolts 15 to the detachable frame section S, said section being in the form of a bar opposed to the bar 6. The ends of this bar are notched as at 16 to interfit with the notched ends of the arms 8, and the central portion of said bar is formed with another notch 17 which receives the front extremity of the arm 13.

The inner longitudinal edge of the bar 6 is formed with a groove 18, and a similar groove 19 is formed in the inner longitudinal edge of the bar or removable frame section S. The upper edge of arm 13 is preferably flush with the lower side of the groove 18. The two grooves 18 and 19 receive projecting ribs 20 add 21 on the fire-supporting means M, thereby securely locking said means to the frame F, as long as the bar or detachable frame section S is bolted in place. Upon removal of the bolts 15 and detachment of the member S however, the fire-supporting means M may be quickly and easily removed, allowing it to be either repaired or replaced.

The means M preferably consists of a plurality of rectangular plates 22 having ashdischarge and air-admission slots 23. Obviously, any damaged plate or plates can be removed and a new plate or plates substituted, allowing furthor use of any of the plates which may be in such condition as to permit further service thereof. Then too, should the frame F be severely damaged and the fire-supporting means M still intact, a new frame may be substituted at small cost, and due to the sectional construction of the device, it may be more readily taken out of the fire-box and the replacement device may be more easily installed. Moreover, due to said sectional construction, expansion and contraction may take place freely and with no danger of warping and breakage.

IVhile excellent results are obtainable from the details disclosed, attention is again invited to the fact that within the scope of v the invention as claimed, variations may be made.

I claim 1. In a dumping section for a grate, a frame comprising a horizontal bar for disposition transversely across one end of a firebox, two horizontal arms rigidly connected with the ends of said bar and projecting laterally therefrom, said arms having free ends, a second horizontal bar opposite the first named 'bar, said bars having longitudinal grooves between the upper and lower edges of their inner opposed sides, and means detachably securin said second horizontal bar to said free en s of said arms; fire-supporting plates within the. confines ofand abutting said frame, the ends of said plates being pro vided with integral ribs received in said grooves and allowing removal of said plates 7 only when said second bar is detached, bearing means on the frame for engagement with extraneous means to pivotally support said frame, and means on said frame for engagement with extraneous dumping means for the grate section.

2. In a dumping section for a grate, a

frame comprising a horizontal bar for disposition transversely across one end of a firebox, one side of said bar having a longitudinal groove between its upper and lower edges, two horizontal arms rigidly joined to the ends of said bar and projecting laterally from said one side thereof, the upper sides of said arms being above said grooves, an intermediate arm between the afore aid arms and rigidly joined to said bar, the upper side of said intermediate arm being flush with the lower side of said groove, all of said arms having free ends, a second horizontal bar opposite the first named bar and having a longitudinal groove between the upper and lower edges of its inner side, and means detachably securing said second bar to said free ends of all of said arms; fire-supporting plates within the confines of said frame, said plates abutting said bars and said two arms. all of said plates having ribs on their ends removably received in said grooves but removable therefrom only when said second bar is detached, at least one of said plates lying upon sald intermediate arm. bearing means on the frame for engagement with extraneous means to pivotally support said frame. and means on said frame for engagement with extraneous dumping means for the grate scetion.

.In testimony whereof I aliix my signature.

ARTHUR \V. HUISON. 

